Hiding her past as a former delinquent and living as an honor student, Torako Koshi encounters a mysterious girl with horns hanging from a telephone pole. This mysterious girl, Noko Shikanoko, becomes the source of turmoil that disrupts Torako's life.
Though I can't let my guard down!
Aber ich muss wachsam bleiben.
¡No puedo bajar la guardia!
Mais je dois rester prudente !
Só que não posso baixar a guarda!